Question

I have to find the exact value of arccos(sin(pi/6)). How would I do that?

Answer 1

That would be radians, not degrees, right? And how do I do it without a calculator?

Answer 2

@surjithayer

Answer 3

@jdoe0001

Answer 4

let arc cos(sin(pi/6))=x
then cosx=sin(pi/6)=1/2=cos(pi/3),
x=pi/3